Extreme low-frequency ultrathin acoustic absorbing metasurface

We introduce a multicoiled acoustic metasurface providing quasiperfect absorption (reaching 99.99% in experiments) at an extremely low-frequency of 50 Hz, simultaneously featuring an ultrathin thickness down to λ/527 (1.3 cm). In contrast to the state of the art, this original conceived multicoiled...

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Veröffentlicht in:	Applied physics letters 2019-10, Vol.115 (17)
Hauptverfasser:	Donda, Krupali, Zhu, Yifan, Fan, Shi-Wang, Cao, Liyun, Li, Yong, Assouar, Badreddine
Format:	Artikel
Sprache:	eng
Schlagworte:	Absorbers Acoustic absorption Acoustic impedance Acoustics Applied physics Broadband Computer simulation Engineering Sciences Materials Mechanics Metasurfaces Optics Photonic Physics Thickness
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